How to Convert CSV to Excel in C#. For more information, please follow link: https://kb.groupdocs.com/conversion/net/how-to-convert-csv-to-excel-in-csharp/

How to Convert CSV to Excel in C#.cs

using System;
using GroupDocs.Conversion.Options.Convert;

namespace ConvertCsvToExcelInCSharp
{
    class Program
    {
        public static void Main(string[] args) // Main function to convert CSV to Excel using C#
        {
            // Remove the watermark in output Excel document by adding license
            string licensePath = "GroupDocs.Conversion.lic";
            GroupDocs.Conversion.License lic = new GroupDocs.Conversion.License();
            lic.SetLicense(licensePath);
            
            // Load the source CSV file for conversion to Excel
            var converter = new GroupDocs.Conversion.Converter("sample.csv");
                
            // Set the convert options for the Excel file
            var convertOptions = new SpreadsheetConvertOptions();

            // Convert and save the CSV in XLSX format
            converter.Convert("converted.xlsx", convertOptions);

            Console.WriteLine("Done");
        }
    }
}